11990478 has 8 divisors (see below), whose sum is σ = 23980968. Its totient is φ = 3996824.

The previous prime is 11990467. The next prime is 11990483. The reversal of 11990478 is 87409911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

11990478 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999201 + ... + 999212.

It is an arithmetic number, because the mean of its divisors is an integer number (2997621).

Almost surely, 2^11990478 is an apocalyptic number.

11990478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11990478 is a wasteful number, since it uses less digits than its factorization.

11990478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998418.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 11990478 is about 3462.7269600706. The cubic root of 11990478 is about 228.8822771033.

The spelling of 11990478 in words is "eleven million, nine hundred ninety thousand, four hundred seventy-eight".